Assalamualaikum wr.wb
Today our group (4) has an opportunity to present on "Use of Electromagnets". " of us taking turns reading, Slide with our slides alternately present. After the presentation there will be a question and answer session. Finally we are corrected with Together.Results of correction together Our group is still confused how to make passive sentences and active sentences, the source of the article is not included, and moreover still difficult to speak in front (hehe). Thanks to Ms.Rella and friends for correction and after corrected the result will be e-mailed to Ms.Rella. Alhamdulillah this is a great relief. This is the presentation of our article after being corrected.
GROUP 4
Adianto(1720201076)
Alif Bagaskara(1720201045)
Fajar Ardiansyah(1720201006)
Muhammad Azis Rizal Rifa’i(1720201074)
Muhammad Fachri(1720201086)
The Use of Electromagnet
An electromagnet is a type of magnet in which the magnetic field is produced by an electric current.The magnetic field disappears when the current is turned off.Electromagnetic has created by way of wrapping the wire on a conductor metal such as iron or steel, then irrigated with an electric current, and change the iron or steel inside the coils into a magnet.
Some history scientist electromagnet :
Danish scientist Hans Christian Orsted had discovered in 1820 that electric currents create magnetic fields. British scientist William Sturgeon had invented the electromagnet in 1824.Begining in 1830, US scientist Joseph henry systematically had improved and popularized the electromagnet.
Example aplication electromagnetic on daily life :
Electric bell
An electric bell is a mechanical bell that functions by means of an electromagnet. When an electric current is applied, it produces a repetitive buzzing or clanging sound.Electric bells have been widely used at railroad crossings, in telephones, school bells, and doorbells. sound.Electric bells have been widely used at railroadcrossings, in telephones, school bells, and doorbells.
1. 1. WHAT
What is the electromagnet?
S +is/am/are+v1 (simple present tense)
Electromagnet is a type of magnet in which the magnetic field is produced by an
electric current.
2. 2. WHO
Who is Joseph Henry?
Joseph Henry is an US scientist who had systematically improved and popularized the electromagnet.
3. 3. WHERE
Where is a scientist William Sturgeon from?
He is a scientist from England.
4. 4. WHY
Why is the electric bell function?
Because the electric bell is a mechanical bell that functions by means of an electromagnet.
5. 5. WHEN
When did Hans Christian Orsted discover electric currents create a magnetic fields?
Hans christian orsted discovered the electric currents create a magnetic field in 1820.
6. 6. HOW
How does electric bell function?
The electric bell functions when an electric current is applied, it produces a repetitive buzzing or clanging sound.
Verbal Sentence
1.The magnetic field disappears when the current is turned off.
2.Electromagnetic has created by way of wrapping the wire on a conductor metal such as iron or steel,then irrigated with electric current and change the iron or steel inside the coils into a magnet.
3.Joseph henry had improved and popularized the electromagnet.
4.Hans Christian Orsted had discovered in 1820 that electric currents create magnetic fields.
5.William Sturgeon had invented the electromagnet in 1824.
6.Electric bells have been widely used at railroad crossings, in telephones, school bells, and doorbells.
Nominal Sentence
1.Electromagnet is a type of magnet.
2.Electric bell is a mechanical bell.
TENSES, ITS PATTERN AND REASONS
Simple Present tense
·The magnetic field disappears when the current is turned off.
osubject + verb 1 (-s/-es) + object
·Electromagnet is a type of magnet in which the magnetic field is produced by an electric current.
osubject + to be + object
·Electric bell is a mechanical bell that functions by means of an electromagnet.
oSubject + to be + object
REASON : Because the writer is writing about general truths or scientific fact.
present perfect tense
·Electromagnetic has created by way of wrapping the wire on a conductor metal such as iron or steel.
Subject + has/have + verb 3 + object
REASON : for something that started in the past and continues in the present.
past perfect tense
·William Sturgeon had invented the electromagnet in 1824.
Subject + had + verb 3 + object
·Joseph henry had improved and popularized the electromagnet.
Subject + had + verb 3 + object
·Hans Christian Orsted had discovered in 1820 that electric currents create magnetic.
Subject+had+ verb 3+object
REASON : Because the writer is writing about the past and told some history scientist electromagnet.
Active/Passive sentence
1.Active
·Joseph henry had improved and popularized the electromagnet.
·An electric current produces electromagnet.
·Electric bell is a mechanical bell that functions by means of an electromagnet.
·Hans Christian Orsted had discovered in 1820 that electric currents create magnetic.
·British scientist William Sturgeon had invented the electromagnet in 1824.
·Electromagnet had been invented by british scientist William Sturgeon in 1824.
2.Passive
·Electromagnet had been popularized and improved by joseph henry.
·Electromagnet is a type of magnet in which the magnetic field is produced by an electric current.
·An electromagnet is functioned in electric bell.
·the electric currents create magnetic had been discovered by Hans Christian Orsted in 1820.
Article translation
Kegunaan Elektromagnet
Elektromagnet adalah sebuah tipe magnet dimana medan magnet dihasilkan dari sebuah arus listrik. Medan magnet menghilang saat arus listrik dimatikan. Elektromagnet dibuat dari lilitan kawat pada logam konduktor seperti besi atau baja, kemudian dialiri dengan arus listrik, dan mengubah besi atau baja didalam didalam kumparan magnet.
Beberapa sejarah ilmuwan elektromagnet :
Ilmuwan Denmark Hans Christian Orsted menemukan bahwa arus listrik membuat medan magnet pada tahun 1820.Ilmuwan Inggris William turgeon menemukan elektromagnet pada 1824. Dimulai pada 1830, ilmuwan Amerika Joseph Henry secara sistem sudah meningkatkan dan mempopulerkan elektromagnet.
Contoh pengaplikasian elektromagnet di kehidupan sehari hari :
Bel listrik
Bel listrik adalah sebuah bel mekanik yang fungsinya dari sebuah elektromagnet. Ketika arus listrik dialirkan, maka ia menghasilkan suara dengungan berulang atau suara berdering. Bel listrik secara luas digunakan pada palang kereta api, telepon, bel sekolah, dan bel pintu.
THE END
